Directorate of Telecommunications (DTELS)
- Dedicated to former UK Home Office department responsible for providing wireless communication to Emergency Service and Central Government users from 1939 until it was privatised in 1994.

L.A.P.D. Communications
- Unofficial history of the Los Angeles Police Department Communications Division detailed in a series of photographs.

Motorola History
- Motorola was founded by Paul V. Galvin as the Galvin Manufacturing Corporation, in Chicago, Illinois, in 1928.